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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 19 (Automatic Transmission - ALLISON - Introduction (2 Of 2)) >> Description and Operation >> Transmission Component and System Description >> Hydraulic System

Hydraulic System

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A common hydraulic system serves the torque converter and the transmission. Transmission fluid for all hydraulic operations, lubrication, and cooling comes from the sump and is supplied by the charging pump.